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Inspector Tracy Harkins, from Paisley’s community team, appealed for witnesses to come forward.

She told the Paisley Daily Express: “There appears to have been an altercation between both drivers on the road. The suspect has thereafter got out of his vehicle and presented a drill-type tool. He then struck the window of the victim’s car with it, causing it to smash. The suspect has then struck the victim, causing minor arm injuries.”

She added: “I would ask anyone who may have witnessed the incident to come forward.

“If you observed a Ford Transit van, with a reg starting SY59, being driven erratically between Barrhead Road and Falside Road, then we would like to hear from you.

“I’d also ask motorists to check dashcam footage to see if they captured anything which my be useful to our investigation.

“Although the victim suffered only minor injuries, he was left badly shaken. This incident could have been much more serious. It is very important we trace this dangerous individual.”

Anyone with information should contact police on 101, or Crimetsoppers on 0800 555 111.